If the Price of Hair Styling Increases, Then

If the price of hair styling increases, then

A) hair styling salons hire fewer workers but makes more profit.
B) hair stylists demand an increase in wages and the salons hire fewer workers.
C) the value of marginal product of each hair stylist increases and the demand curve for hair stylists shifts leftward.
D) the value of marginal product of each hair stylist increases and the demand curve for hair stylists shifts rightward.